φ2 or not φ2: Testing the simplest inflationary potential

The simplest inflationary model V=12m2φ2 represents the benchmark for future constraints. For a quadratic potential, the quantity (ns-1)+r/4+11(ns-1) 2/24 vanishes (up to corrections which are cubic in slow roll) and can be used to parametrize small deviations from the minimal scenario. Future const...

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Autores principales: López Nacir, Diana Laura, Zaldarriaga, Matias
Publicado: 2014
Materias:
Atomic physics
Energy scale
Nongaussianity
Reheating temperature
Spectral indices
Physics
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v112_n24_p_Creminelli
http://hdl.handle.net/20.500.12110/paper_00319007_v112_n24_p_Creminelli
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_00319007_v112_n24_p_Creminelli2023-06-08T14:58:09Z φ2 or not φ2: Testing the simplest inflationary potential López Nacir, Diana Laura Zaldarriaga, Matias Atomic physics Energy scale Nongaussianity Reheating temperature Spectral indices Physics The simplest inflationary model V=12m2φ2 represents the benchmark for future constraints. For a quadratic potential, the quantity (ns-1)+r/4+11(ns-1) 2/24 vanishes (up to corrections which are cubic in slow roll) and can be used to parametrize small deviations from the minimal scenario. Future constraints on this quantity will be able to distinguish a quadratic potential from a pseudo-Nambu-Goldstone boson with f30Mpl and set limits on the deviation from unity of the speed of sound |cs-1|3×10-2 (corresponding to an energy scale Λ2×1016GeV) and on the contribution of a second field to perturbations (6×10-2). The limiting factor for these bounds will be the uncertainty on the spectral index. The error on the number of e-folds will be ΔN≃0.4, corresponding to an error on the reheating temperature ΔTrh/Trh≃1.2. We comment on the relevance of non-Gaussianity after BICEP2 results. © 2014 American Physical Society. Fil:López Nacir, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zaldarriaga, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v112_n24_p_Creminelli http://hdl.handle.net/20.500.12110/paper_00319007_v112_n24_p_Creminelli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atomic physics
Energy scale
Nongaussianity
Reheating temperature
Spectral indices
Physics
spellingShingle Atomic physics
Energy scale
Nongaussianity
Reheating temperature
Spectral indices
Physics
López Nacir, Diana Laura
Zaldarriaga, Matias
φ2 or not φ2: Testing the simplest inflationary potential
topic_facet Atomic physics
Energy scale
Nongaussianity
Reheating temperature
Spectral indices
Physics
description The simplest inflationary model V=12m2φ2 represents the benchmark for future constraints. For a quadratic potential, the quantity (ns-1)+r/4+11(ns-1) 2/24 vanishes (up to corrections which are cubic in slow roll) and can be used to parametrize small deviations from the minimal scenario. Future constraints on this quantity will be able to distinguish a quadratic potential from a pseudo-Nambu-Goldstone boson with f30Mpl and set limits on the deviation from unity of the speed of sound |cs-1|3×10-2 (corresponding to an energy scale Λ2×1016GeV) and on the contribution of a second field to perturbations (6×10-2). The limiting factor for these bounds will be the uncertainty on the spectral index. The error on the number of e-folds will be ΔN≃0.4, corresponding to an error on the reheating temperature ΔTrh/Trh≃1.2. We comment on the relevance of non-Gaussianity after BICEP2 results. © 2014 American Physical Society.
author López Nacir, Diana Laura
Zaldarriaga, Matias
author_facet López Nacir, Diana Laura
Zaldarriaga, Matias
author_sort López Nacir, Diana Laura
title φ2 or not φ2: Testing the simplest inflationary potential
title_short φ2 or not φ2: Testing the simplest inflationary potential
title_full φ2 or not φ2: Testing the simplest inflationary potential
title_fullStr φ2 or not φ2: Testing the simplest inflationary potential
title_full_unstemmed φ2 or not φ2: Testing the simplest inflationary potential
title_sort φ2 or not φ2: testing the simplest inflationary potential
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v112_n24_p_Creminelli
http://hdl.handle.net/20.500.12110/paper_00319007_v112_n24_p_Creminelli
work_keys_str_mv AT lopeznacirdianalaura ph2ornotph2testingthesimplestinflationarypotential
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